Media diagnostics · Primary-source explanation; examples are illustrative. Instructions are based on publisher guidance; a UK IPTV account was not tested on this platform.
Check routing before rerecording
OBS explains that multitrack recording is useful for later editing, while ordinary playback normally presents one audio track at a time. If a locally made recording has desktop sound but no microphone, inspect which track the player selected and how the sources were routed. A microphone meter moving during capture and silence in one playback track can both be true. The missing sound may exist elsewhere in the container rather than being absent from the recording.
Make a small identifiable test
An original test records a spoken phrase from the microphone followed by a harmless desktop sound, using clearly separated moments. Inspect the available tracks after stopping cleanly. A mixed track intended for ordinary viewing should contain both signals; isolated editing tracks should retain their separate purpose. Write down the routing and the output tracks actually enabled. Assigning a source to a track which was not enabled for recording would be a different configuration issue.
Keep a viewing mix alongside editing material
The OBS guide illustrates putting all intended playback sources onto one track while using additional tracks for separation. Choose that arrangement when it fits the project, then verify the exported recording with the intended player. Preserve isolated originals for later editing. This is a local production workflow and does not involve capturing programmes without permission. It also does not imply that selecting another audio track can create a commentary or language track which was never recorded.